东西没仔细看就给别人了，具体是系统默认的sshd怎么都起不来。于是重新安装一下，过程如下
root@samuraiwtf:~# netstat -nlt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.1.1:53 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
tcp6 0 0 ::1:631 :::* LISTEN
tcp6 0 0 :::443 :::* LISTEN
tcp6 0 0 :::80 :::* LISTEN
root@samuraiwtf:~# /etc/init.d/
acpid grub-common reboot
anacron halt resolvconf
apache2 irqbalance rsync
apparmor kerneloops rsyslog
apport killprocs saned
avahi-daemon kmod sendsigs
bluetooth lightdm single
brltty mysql speech-dispatcher
console-setup networking ssh
cron ondemand sudo
cryptdisks openvpn udev
cryptdisks-early pppd-dns umountfs
cups procps umountnfs.sh
cups-browsed pulseaudio umountroot
dbus rc unattended-upgrades
dns-clean rc.local urandom
friendly-recovery rcS x11-common
root@samuraiwtf:~# /etc/init.d/ssh start
root@samuraiwtf:~# cd /etc/init.d
root@samuraiwtf:/etc/init.d# ls
acpid dbus pppd-dns skeleton
anacron dns-clean procps speech-dispatcher
apache2 friendly-recovery pulseaudio ssh
apparmor grub-common rc sudo
apport halt rc.local udev
avahi-daemon irqbalance rcS umountfs
bluetooth kerneloops README umountnfs.sh
brltty killprocs reboot umountroot
console-setup kmod resolvconf unattended-upgrades
cron lightdm rsync urandom
cryptdisks mysql rsyslog x11-common
cryptdisks-early networking saned
cups ondemand sendsigs
cups-browsed openvpn single
root@samuraiwtf:/etc/init.d# more ssh
...............没有任何问题....................
root@samuraiwtf:/etc/init.d# /etc/init.d/ssh reload
root@samuraiwtf:/etc/init.d# apt-get update
Ign http://dl.google.com stable InRelease
Get:1 http://dl.google.com stable Release.gpg [916 B]
Get:2 http://dl.google.com stable Release [1,189 B]
Get:3 http://security.ubuntu.com trusty-security InRelease [65.9 kB]
Ign http://us.archive.ubuntu.com trusty InRelease
Ign http://archive.canonical.com trusty InRelease
Get:4 http://ppa.launchpad.net trusty InRelease [15.5 kB]
Get:5 http://us.archive.ubuntu.com trusty-updates InRelease [65.9 kB]
Get:6 http://archive.canonical.com trusty Release.gpg [933 B]
Get:7 http://ppa.launchpad.net trusty/main i386 Packages [6,858 B]
Get:8 http://security.ubuntu.com trusty-security/main Sources [118 kB]
Get:9 http://archive.canonical.com trusty Release [9,359 B]
Ign http://extras.ubuntu.com trusty InRelease
Get:10 http://us.archive.ubuntu.com trusty-backports InRelease [65.9 kB]
Get:11 http://security.ubuntu.com trusty-security/restricted Sources [4,064 B]
Get:12 http://extras.ubuntu.com trusty Release.gpg [72 B]
Get:13 http://security.ubuntu.com trusty-security/universe Sources [38.0 kB]
Get:14 http://security.ubuntu.com trusty-security/multiverse Sources [2,760 B]
Get:15 http://security.ubuntu.com trusty-security/main i386 Packages [477 kB]
Get:16 http://archive.canonical.com trusty/partner Sources [10.0 kB]
Get:17 http://extras.ubuntu.com trusty Release [11.9 kB]
Get:18 http://ppa.launchpad.net trusty/main Translation-en [3,553 B]
Get:19 http://us.archive.ubuntu.com trusty Release.gpg [933 B]
Get:20 http://archive.canonical.com trusty/partner i386 Packages [6,285 B]
Get:21 http://us.archive.ubuntu.com trusty-updates/main Sources [380 kB]
Get:22 http://archive.canonical.com trusty/partner Translation-en [4,593 B]
Get:23 http://security.ubuntu.com trusty-security/restricted i386 Packages [12.7 kB]
Get:24 http://security.ubuntu.com trusty-security/universe i386 Packages [131 kB]
Get:25 http://extras.ubuntu.com trusty/main Sources [1,064 kB]
Get:26 http://extras.ubuntu.com trusty/main i386 Packages [1,348 kB]
Get:27 http://security.ubuntu.com trusty-security/multiverse i386 Packages [5,178 B]
Get:28 http://security.ubuntu.com trusty-security/main Translation-en [282 kB]
Get:29 http://extras.ubuntu.com trusty/main Translation-en [762 kB]
Ign http://extras.ubuntu.com trusty/main Translation-en_US
Get:30 http://security.ubuntu.com trusty-security/multiverse Translation-en [2,570 B]
Get:31 http://security.ubuntu.com trusty-security/restricted Translation-en [3,206 B]
Get:32 http://security.ubuntu.com trusty-security/universe Translation-en [77.2 kB]
Get:33 http://us.archive.ubuntu.com trusty-updates/restricted Sources [5,360 B]
Get:34 http://us.archive.ubuntu.com trusty-updates/universe Sources [160 kB]
Get:35 http://us.archive.ubuntu.com trusty-updates/multiverse Sources [7,137 B]
Get:36 http://us.archive.ubuntu.com trusty-updates/main i386 Packages [631 kB]
Get:37 http://us.archive.ubuntu.com trusty-updates/restricted i386 Packages [15.6 kB]
Get:38 http://us.archive.ubuntu.com trusty-updates/universe i386 Packages [369 kB]
Get:39 http://us.archive.ubuntu.com trusty-updates/multiverse i386 Packages [15.2 kB]
Get:40 http://us.archive.ubuntu.com trusty-updates/main Translation-en [423 kB]
Get:41 http://us.archive.ubuntu.com trusty-updates/multiverse Translation-en [7,661 B]
Get:42 http://us.archive.ubuntu.com trusty-updates/restricted Translation-en [3,699 B]
Get:43 http://us.archive.ubuntu.com trusty-updates/universe Translation-en [193 kB]
Get:44 http://us.archive.ubuntu.com trusty Release [58.5 kB]
Get:45 http://us.archive.ubuntu.com trusty-backports/main Sources [9,561 B]
Get:46 http://us.archive.ubuntu.com trusty-backports/restricted Sources [28 B]
Get:47 http://us.archive.ubuntu.com trusty-backports/universe Sources [35.2 kB]
Get:48 http://us.archive.ubuntu.com trusty-backports/multiverse Sources [1,898 B]
Get:49 http://us.archive.ubuntu.com trusty-backports/main i386 Packages [13.3 kB]
Get:50 http://us.archive.ubuntu.com trusty-backports/restricted i386 Packages [28 B]
Get:51 http://us.archive.ubuntu.com trusty-backports/universe i386 Packages [43.2 kB]
Get:52 http://us.archive.ubuntu.com trusty-backports/multiverse i386 Packages [1,552 B]
Get:53 http://us.archive.ubuntu.com trusty-backports/main Translation-en [7,493 B]
Get:54 http://us.archive.ubuntu.com trusty-backports/multiverse Translation-en [1,215 B]
Get:55 http://us.archive.ubuntu.com trusty-backports/restricted Translation-en [28 B]
Get:56 http://us.archive.ubuntu.com trusty-backports/universe Translation-en [36.8 kB]
Get:57 http://us.archive.ubuntu.com trusty/main Sources [1,064 kB]
Get:58 http://us.archive.ubuntu.com trusty/restricted Sources [5,433 B]
Get:59 http://us.archive.ubuntu.com trusty/universe Sources [6,399 kB]
Get:60 http://us.archive.ubuntu.com trusty/multiverse Sources [174 kB]
Get:61 http://us.archive.ubuntu.com trusty/main i386 Packages [1,348 kB]
Get:62 http://us.archive.ubuntu.com trusty/restricted i386 Packages [13.4 kB]
Get:63 http://us.archive.ubuntu.com trusty/universe i386 Packages [5,866 kB]
Get:64 http://us.archive.ubuntu.com trusty/universe i386 Packages [5,866 kB]
Get:65 http://us.archive.ubuntu.com trusty/multiverse i386 Packages [134 kB]
Get:66 http://us.archive.ubuntu.com trusty/main Translation-en [762 kB]
Get:67 http://us.archive.ubuntu.com trusty/multiverse Translation-en [102 kB]
Get:68 http://us.archive.ubuntu.com trusty/restricted Translation-en [3,457 B]
Get:69 http://us.archive.ubuntu.com trusty/universe Translation-en [4,089 kB]
Ign http://us.archive.ubuntu.com trusty/main Translation-en_US
Ign http://us.archive.ubuntu.com trusty/multiverse Translation-en_US
Ign http://us.archive.ubuntu.com trusty/restricted Translation-en_US
Ign http://us.archive.ubuntu.com trusty/universe Translation-en_US
Fetched 22.2 MB in 4min 42s (78.7 kB/s)
W: There is no public key available for the following key IDs:
1397BC53640DB551
W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty-updates/main/binary-i386/Packages Hash Sum mismatch
W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/trusty/main/source/Sources Hash Sum mismatch
W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/trusty/main/binary-i386/Packages Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead.
root@samuraiwtf:/etc/init.d# apt-get install openssh-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
openssh-client
Suggested packages:
libpam-ssh keychain monkeysphere rssh molly-guard
The following packages will be upgraded:
openssh-client openssh-server
2 upgraded, 0 newly installed, 0 to remove and 243 not upgraded.
Need to get 902 kB of archives.
After this operation, 5,120 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://security.ubuntu.com/ubuntu/ trusty-security/main openssh-server i386 1:6.6p1-2ubuntu2.7 [325 kB]
Get:2 http://security.ubuntu.com/ubuntu/ trusty-security/main openssh-client i386 1:6.6p1-2ubuntu2.7 [577 kB]
Fetched 902 kB in 5s (164 kB/s)
Preconfiguring packages ...
(Reading database ... 311843 files and directories currently installed.)
Preparing to unpack .../openssh-server_1%3a6.6p1-2ubuntu2.7_i386.deb ...
Unpacking openssh-server (1:6.6p1-2ubuntu2.7) over (1:6.6p1-2ubuntu2.4) ...
Preparing to unpack .../openssh-client_1%3a6.6p1-2ubuntu2.7_i386.deb ...
Unpacking openssh-client (1:6.6p1-2ubuntu2.7) over (1:6.6p1-2ubuntu2.4) ...
Processing triggers for ureadahead (0.100.0-16) ...
ureadahead will be reprofiled on next reboot
Processing triggers for ufw (0.34~rc-0ubuntu2) ...
Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
Setting up openssh-client (1:6.6p1-2ubuntu2.7) ...
Setting up openssh-server (1:6.6p1-2ubuntu2.7) ...
initctl: Unknown job: ssh
root@samuraiwtf:/etc/init.d# service ssh start
start: Unknown job: ssh
还是无法启动，只有采取强制性的办法了：
root@samuraiwtf:/etc/init.d# sudo /usr/sbin/sshd
Missing privilege separation directory: /var/run/sshd
root@samuraiwtf:/etc/init.d# sudo mkdir /var/run/sshd
root@samuraiwtf:/etc/init.d# sudo /usr/sbin/sshd
root@samuraiwtf:/etc/init.d# netstat -nlt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 127.0.1.1:53 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
tcp6 0 0 :::22 :::* LISTEN
tcp6 0 0 ::1:631 :::* LISTEN
tcp6 0 0 :::443 :::* LISTEN
tcp6 0 0 :::80 :::* LISTEN
root@samuraiwtf:/etc/init.d#
OK，问题解决。